NAME PHYS-1200 PHYSICS II QUIZ 1 FEBRUARY 15, 2006 SOLUTIONS PART A. 1. C 4. A 8. B 2. D 5. E 3. E 6. B 7. D PART B . 1. INCREASE . q = C E . When the switch is closed, C 3 will be added in parallel with C 2 . The parallel combination will have a higher capacitance than C 2 alone. Since that combination is in series with C 1 , the total capacitance will increase and the charge will increase. 2. The resistors are in series so the current is the same in both resistors. i = 0.60 A 3. The figure is below. The reasons for the results are as follows: a) According to the right hand rule, both wires produce fields that point upward at O . b) According to the right hand rule, both wires produce fields that go around the individual wires in a clockwise direction at point P . The veritcal components of the two fields add to zero, and both horizontal components point to the right. c) The wire on the left produces a field that points downward, and the wire on the right produces a field of equal magnitude that points upward at point Q . They add to zero.

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